Home / 387,913.03-535,326.51-215,844.73

Finding the Fourth Proportional to 387,913.03, 535,326.51 and 215,844.73

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Solution

The fourth proportional to 387,913.03, 535,326.51 and 215,844.73 is: 297,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,913.03 : 535,326.51 = 215,844.73 : x
  2. Step 2: Convert to fraction form
    387,913.03/535,326.51 = 215,844.73/x
  3. Step 3: Cross multiply
    387,913.03x = 535,326.51 × 215,844.73
  4. Step 4: Simplify right side
    387,913.03x = 115,547,406,012.79
  5. Step 5: Solve for x
    x = 115,547,406,012.79/387,913.03
  6. Step 6: Final answer
    x = 297,869.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.